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Leaves
【PAT1004】Counting
Leaves
1004.CountingLeaves(30)时间限制400ms内存限制32000kB代码长度限制16000B判题程序Standard作者CHEN,YueAfamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputEachinputfilecontai
tiantangrenjian
·
2020-06-26 19:53
树
数据结构
LightGBM参数的贝叶斯搜索
首先定义要优化的目标:#定义要优化的目标defLGB_L1_bayesian(num_
leaves
,learning_rate,feature_fraction,lambda_l1,lambda_l2,
i_chase
·
2020-06-25 16:44
PAT甲级 1004.Counting
Leaves
(30) 题目翻译与答案
题目来源自PAT网站https://www.patest.cn/题目描述:1004.CountingLeaves(30)Afamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputEachinputfilecontainsonetestcase.Eac
漂流瓶jz
·
2020-06-24 22:45
PAT甲级
PAT (Advanced Level) Practice A1004 Counting
Leaves
(30 分)(C++)(甲级)(树、层次遍历)
原题链接:A1004CountingLeaves#include#include#include#include#includeusingnamespacestd;typedefstructPTNode{vectorchild;}PTNode;PTNodePTree[100010];voidBFS(intID)//广度优先搜索思想,或者说层次遍历思想{queueQ;Q.push(ID);intla
复旦笨比master
·
2020-06-24 11:32
PAT甲级刷题笔记
iPhone ebook 中翻页效果(牛人)的实现
代码在:https://github.com/brow/
leaves
把github里简单的教程在此帖下:Ins
史前文物
·
2020-06-24 10:28
iOS
ebook
iphone
interface
xcode
PAT (Advanced Level) 1004 Counting
Leaves
(30 分)
1004CountingLeaves(30分)Afamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputSpecification:Eachinputfilecontainsonetestcase.Eachcasestartswithalinecon
isunLt
·
2020-06-23 18:19
PAT
PAT
03-树2 List
Leaves
(C++实现):二叉树建立+层序遍历+叶节点+#include 的使用
原题目:https://www.icourse163.org/course/ZJU-9300103-树2ListLeaves(25分)Givenatree,youaresupposedtolistalltheleavesintheorderoftopdown,andlefttoright.InputSpecification:Eachinputfilecontainsonetestcase.For
曾小水
·
2020-06-23 17:21
数据结构与算法
C/C++
秋叶 Autumn
Leaves
Silentalways,Weatheredinseasons...YetitscolourSpeaksvolumes...WithvehementbrillianceAndstunningbeauty,Alltheleaveswilldie,Diewithoutremorse...'Theycame...Theylived...Theyleft...'Sothelegendgoes...图片发自
孤帆远影lhy
·
2020-06-23 00:24
Sum of Left
Leaves
题目404.SumofLeftLeavesFindthesumofallleftleavesinagivenbinarytree.Example:3/920/157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.1,深搜publicclassSolution{publicintsumOfLeftL
evil_ice
·
2020-06-23 00:49
List
Leaves
原问题地址https://pta.patest.cn/pta/test/558/exam/4/question/8838Foreachtestcase,printinonelinealltheleaves'indicesintheorderoftopdown,andlefttoright.Theremustbeexactlyonespacebetweenanyadjacentnumbers,and
qratosone
·
2020-06-22 16:42
OpenGL ES学习笔记4:混合和多重纹理
一、先上效果图混合.png二、混合的主要代码-(void)setupTextureInfo{CGImageRefimageRef0=[[UIImageimageNamed:@"
leaves
.gif"]CGImage
南华coder
·
2020-06-22 05:28
Leetcode Check If a String Is a Valid Sequence from Root to
Leaves
Path in a Binary Tree
题目链接:CheckIfaStringIsaValidSequencefromRoottoLeavesPathinaBinaryTree题目大意:要求你去找到一条路径,要求这条路径上的值跟要求的arr数组长度和值都一样,并且这条路径是从根节点到叶子节点题目思路:一个简单的dfs即可,我们可以知道,对于找到的路径,每个节点的层数就是他在数组中的第几个,所以可以记录一下当前节点的层数,然后进行对比,如
Nemaleswang
·
2020-06-22 02:51
Leetcode
数据结构-链表
二叉树
【PAT甲级】1004 Counting
Leaves
(30 分)
Afamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputSpecification:Eachinputfilecontainsonetestcase.Eachcasestartswithalinecontaining0#include#includ
想永远与你同梦
·
2020-06-21 22:23
PAT
PAT-A1004 Counting
Leaves
题目内容及题解
Afamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputSpecification:Eachinputfilecontainsonetestcase.Eachcasestartswithalinecontaining0#defineMAXN110s
Bourbon_Whiskey_
·
2020-06-21 17:13
PAT甲级
Game On
Leaves
题解】
题意分析关于这道题,意思就是两个人摘叶子,谁最后摘到编号为x的谁就赢了。既然是叶子,说明其最多只有一个分支,由于题目上说了是无向图,那就是度数小于等于1的节点。也就是一步步移除度数小于等于1的节点,直到将编号为x的节点删掉游戏才结束。那么我们可以将x这个节点作为根节点,初始时这棵树的样子如下:两个人摘来摘去,谁也不想让对方赢,最终的结果必然是这个样子。(这是当节点总数大于等于3的情况)这样我们就不
DIY-Z
·
2020-06-01 12:00
LeetCode 1325 Delete
Leaves
With a Given Value (DFS)
Givenabinarytreerootandanintegertarget,deletealltheleafnodeswithvaluetarget.Notethatonceyoudeletealeafnodewithvaluetarget,ifit'sparentnodebecomesaleafnodeandhasthevaluetarget,itshouldalsobedeleted(you
_TCgogogo_
·
2020-04-16 14:04
LeetCode
Leetcode
Medium
DFS
【原创】Python学习笔记01-CentOS6.8安装Python3.6.1
#通过它就能将当初安装某个软件所依赖的东西给清理掉#使用yum卸载软件的时候加上–remove-
leaves
参数shell>yuminstallyum-plugin-remove-with-leavesshell
JokerW
·
2020-04-12 18:46
1004 Counting
Leaves
(30)(30 分)
DFS:因为要知道有多少层,每次进DFS先更新一下最大层数#include#include#includeusingnamespacestd;constintmaxn=110;vectornode[maxn];intn,m;intLayer[maxn];intmaxlayer=0;voidDFS(intindex,intlayer){maxlayer=max(maxlayer,layer);if(
DaiMorph
·
2020-04-11 15:05
1004 Counting
Leaves
1004CountingLeaves(30)(30分)Afamilyhierarchyisusuallypresentedbyapedigreetree.Yourjobistocountthosefamilymemberswhohavenochild.InputEachinputfilecontainsonetestcase.Eachcasestartswithalinecontaining0
_风雪夜归_
·
2020-04-06 02:41
Sum of Left
Leaves
原始代码:只要保证最后return的sum是一个全局变量就好了。中间return了什么不重要。//先随便找个方法遍历,遍历到某个node的leftchild不为空但是leftchild的左右孩子都为空的时候加入到sum里去。intsum=0;publicintsumOfLeftLeaves(TreeNoderoot){if(root==null)return0;if(root.left!=null
DrunkPian0
·
2020-03-31 11:25
pat 1004 Counting
Leaves
(30)
Generalthoughts这题相对来说比较容易,因为不知道每个节点有几个孩子,采用的是nextsibling的数据结构。在标记level以及顺便计算每层叶子节点的个数时,用的是list实现的BFS。Obstacles应该是input中的每一行输入的ID是乱序的,我尝试过在输入时直接计算level数,结果是部分正确。另外,当输出结果出现很大的数时,应该首先检查是不是有数组忘了初始化。(而且,我第
ahalaoreja
·
2020-03-28 04:39
Earth
Leaves
It's Orbit, falling toward Sun!
Extra!Extra!EarthLeavesIt'sOrbit,fallingtowardSun!ByRev.JackBarrAfterbeinghitbyaswarmoflargemeteorsagain,scientistsaythatwehavebeenshakenoutofourorbitaroundthesunandaremovingtowardthesun.Thedestructio
jesusincoming
·
2020-03-25 12:29
每日译文-Highway collision in Afghanistan causes inferno,
Leaves
at least 73 dead
HighwaycollisioninAfghanistancausesinferno,Leavesatleast73dead在阿富汗的公路碰撞事故中,至少导致了73人死亡Atleast73peoplewerekilledSundaywhentwopassengerbusesandanoiltankerburstintoflamesinahead-oncollisionineasternAfghan
SSBun
·
2020-03-24 19:40
Find
Leaves
of Binary Tree
Givenabinarytree,collectatree'snodesasifyouweredoingthis:Collectandremoveallleaves,repeatuntilthetreeisempty.Example:Givenbinarytree1/\23/\45Returns[4,5,3],[2],[1].Explanation:Removingtheleaves[4,5,3]
Jeanz
·
2020-03-22 07:27
Sum of Left
Leaves
MySubmissionsTotalAccepted:11811TotalSubmissions:25597Difficulty:EasyContributors:AdminFindthesumofallleftleavesinagivenbinarytree.Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9an
billyzhang
·
2020-03-22 00:35
数据结构3.2-List
Leaves
问题ListLeaves代码n=int(input())root=[]foriinrange(n):root+=[i]tree={}foriinrange(n):node=input().split()tree[i]=nodeifnode[0]!='-':x=int(node[0])x=root.index(x)root.pop(x)ifnode[1]!='-':x=int(node[1])x=r
yigoh
·
2020-03-20 08:21
【LeetCode】Sum of Left
Leaves
左叶子之和
问题Findthesumofallleftleavesinagivenbinarytree.给定一棵二叉树,找出其所有的左叶子节点的值的和。Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.思考这题的关键在于如何找出所有的左叶子节点。而对于一棵二叉树来说,想要找
蘑菇君的小小世界
·
2020-03-18 09:33
女王都撤出白金汉宫了!臣民们还在举行万人狂欢庆典…腐国人民才是真正的战斗民族
不理解英国人的自由主义的人们永远看不懂腐国人民在追求啥https://www.foxnews.com/entertainment/queen-elizabeth-ii-
leaves
-buckingham-palac
星系花园郑好
·
2020-03-17 00:00
Find
Leaves
of Binary Tree
LinktotheproblemDescriptionGivenabinarytree,collectatree'snodesasifyouweredoingthis:Collectandremoveallleaves,repeatuntilthetreeisempty.ExampleInput:[1,2,3,4,5],Output:[4,5,3],[2],[1]IdeaDefinelevelof
邓博文_7c0a
·
2020-03-16 06:17
leaves
perfect 落空
ThereisatreeinParis,Itisveryold.It'sinatouristarea,Inahumbleplace.Inthiswinter,it'sonlythelastleaf.Therestofthisleafisdifferentfromtheothers,ithasalightercolorthantheotherleaves,theotherleavesaregreen
唐小清呀
·
2020-03-11 21:16
Sum of Left
Leaves
左叶子的和
Findthesumofallleftleavesinagivenbinarytree.对给定的二叉树,返回其左叶子的和。Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.思路遍历整棵树,注意判定条件不是当前节点是不是叶子,而是当前节点有没有左叶子结点,有则计入
这就是一个随意的名字
·
2020-03-11 06:52
【连载】Autumn
Leaves
( 1 )
下一章:【连载】AutumnLeaves(2)章节目录:【连载】AutumnLeaves目录飞机在准备降落前盘旋在巴黎的高空,是清晨七点钟。听到空姐的提示,我关闭了显示屏。漫长的国际长途加上时差,像是过了一个永远醒不过来的黑夜。我四处环望,发现右排两个同行的少女早已不是乘坐长途飞机的样子。眼罩耳塞均已取下,妆容一丝不苟。一个乌发雪肤,樱桃红唇膏十分惹眼,另一个是亚洲人罕见的蜜色肤色,配晶亮的裸色口
Evelyn_Z
·
2020-03-09 18:02
Leetcode - Sum of Left
Leaves
Mycode:recursion/***Definitionforabinarytreenode.*publicclassTreeNode{*intval;*TreeNodeleft;*TreeNoderight;*TreeNode(intx){val=x;}*}*/publicclassSolution{publicintsumOfLeftLeaves(TreeNoderoot){if(root
Richardo92
·
2020-03-08 07:49
【连载】Autumn
Leaves
(2)
下一章:【连载】AutumnLeaves(3)上一章:【连载】AutumnLeaves(1)章节目录:【连载】AutumnLeaves目录我们居住的公寓其实是学生宿舍区的公寓,整个宿舍区叫做RésidenceLéonarddeVinci,有个霸气的名字,但实际上也就是普普通通的学生公寓而已。我住在一间单人间里,十几平方米的卧室,配有浅木色的床、办公桌和深棕色的书架。办工桌足有2米长,是我梦想中那种
Evelyn_Z
·
2020-03-05 01:38
Sum of Left
Leaves
题目Findthesumofallleftleavesinagivenbinarytree.Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.解题思路遍历二叉树(这里使用前序,其他遍历方式也可),如果是叶子节点(左右子树都为空),且是左子树(上层参数传递),则累
miltonsun
·
2020-03-01 02:51
【连载】Autumn
Leaves
(7)
上一章目录江蜜离开之后,我和米雪相依为命。这次不是米雪缠着我,而是我依赖米雪了,从我和米雪睡了之后。第一次是在阿姆斯特丹的小旅馆。郁金香盛开的季节,凌晨一点半的红灯区应召女郎在向你招手,花上两欧就可以偷窥一次脱衣舞表演,米雪兴致勃勃,“你想上去跳?”说实话,我毫无兴趣,也毫无性趣。自从江蜜离开,失了魂说的就是我。“谁还不幻想上台跳一次脱衣舞就是Blair……”“然后再在行驶中的加长林肯上被Chuc
Evelyn_Z
·
2020-02-28 00:40
【连载】Autumn
Leaves
(3)
上一章下一章目录图片发自App据说在里尔,每一届的中国留学生中,都会有一位神奇的女生。上一届的学姐Claire,因为一次“狼人杀”中一个自称丘比特的人指认道“情侣之中有一个神奇的人”而愤然离场。那之后,我们之中便反复流传着2个传说:一是她在马赛的前男友曾为了她花下大笔的钱,分手后由富家子弟变得一穷二白,二是她曾经插队占了一个学校安排的实习名额之后,以出让实习名额为条件要求别人请客旅游。这些传说,在
Evelyn_Z
·
2020-02-26 22:18
Tree: sum of all left
leaves
这道题我用recursion版本的pre-ordertraversal访问整个树。几个重点1.如果要用recursion,需要定义一个global的变量,不然很难带inttotal进去recursion。2.一个重要的判断是不是leftleaves,这个是一个套路:if(root.left!=null&&root.left.left==null&&root.left.right==null)那么r
98Future
·
2020-02-26 11:48
【连载】Autumn
Leaves
(4)
上一章下一章目录图片发自App我和江蜜在一起的消息,就像是落入雪山的一片雪,湮没在留学生活无聊琐碎的日常中。所有人,包括米雪,都好似只是经过了一个若无其事的“哦”的表情,然后埋头沉醉于自己的生活。’四月的里尔,空气中漂浮着软糯的樱花味道,江蜜总是穿一件垂坠感极好的薄荷绿的塔夫绸外套。这也是为什么我开始喜欢走在她身后,纤细的腰肢在飘逸的外套下若隐若现。然而今天,江蜜面无表情地站在LilleEurop
Evelyn_Z
·
2020-02-24 09:59
[LeetCode] No.404 Sum of Left
Leaves
链接:https://leetcode.com/problems/sum-of-left-
leaves
/原题:Findthesumofallleftleavesinagivenbinarytree.Example
yuansc
·
2020-02-23 05:47
[LeetCode 404] Sum of Left
Leaves
据说是Facebook的新题,然而被LeetCode标为easy。链接:SumofLeftLeaves题目就是让找一棵树左叶子的总和。想一想,不到一分钟就有了思路,果然是easy题……第一版本:需要判断当前走到的节点是不是为左叶子。就这一个问题。这还不好办,来个flag标记一下,于是有了第一个AC的版本publicclassSolution{publicintsumOfLeftLeaves(Tre
酸辣粉_2329
·
2020-02-22 03:55
Sum of Left
Leaves
Findthesumofallleftleavesinagivenbinarytree.Example:3/920/157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.一刷题解:把tree的问题分解成left和right的subtree问题。用DFS求解/***Definitionforabin
Jeanz
·
2020-02-19 18:08
Q404 Sum of Left
Leaves
Findthesumofallleftleavesinagivenbinarytree.Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.解题思路:首先明确左叶子的定义,即当前结点的左子树非空,且左子树是一个叶子,用代码表示为root.left!=Noneand
牛奶芝麻
·
2020-02-15 07:31
1004 Counting
Leaves
(30point(s)) Easy only once
基本思想:层序遍历问题;关键点:无;#include#include#include#include#include#include#include#include#include#includeusingnamespacestd;intn,m;structnode{vectorchild;};vectortree;vectorseq;/*voidlayer_init(){if(tree.size
宋霖轩
·
2020-02-14 15:00
Sum of Left
Leaves
C++/***Definitionforabinarytreenode.*structTreeNode{*intval;*TreeNode*left;*TreeNode*right;*TreeNode(intx):val(x),left(NULL),right(NULL){}*};*/classSolution{public:intsumOfLeftLeaves(TreeNode*root){if
hyhchaos
·
2020-02-11 03:46
404 sum of left
leaves
Findthesumofallleftleavesinagivenbinarytree.Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.intsumOfLeftLeaves(structTreeNode*root){if(!root)return0;if(ro
larrymusk
·
2020-02-05 16:27
Deepest
Leaves
Sum
1302.DeepestLeavesSumGivenabinarytree,returnthesumofvaluesofitsdeepestleaves.Example1:Input:root=[1,2,3,4,5,null,6,7,null,null,null,null,8]Output:15Constraints:Thenumberofnodesinthetreeisbetween1and10
Schwifty
·
2020-01-30 12:00
删除给定值的叶子节点 | Delete
Leaves
With a Given Value
★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★➤微信公众号:山青咏芝(let_us_code)➤博主域名:https://www.zengqiang.org➤GitHub地址:https://github.com/strengthen/LeetCode➤原文地址:https://www.cnblogs.com/strengthen/p/12213394.html➤
山青咏芝
·
2020-01-19 13:00
Lowest Common Ancestor of Deepest
Leaves
linktoproblemDescription:Givenarootedbinarytree,returnthelowestcommonancestorofitsdeepestleaves.Recallthat:ThenodeofabinarytreeisaleafifandonlyifithasnochildrenThedepthoftherootofthetreeis0,andifthede
蠢材少年
·
2020-01-09 11:00
Sum of Left
Leaves
Findthesumofallleftleavesinagivenbinarytree.Example:3/\920/\157Therearetwoleftleavesinthebinarytree,withvalues9and15respectively.Return24.Solution1:BFS/***Definitionforabinarytreenode.*publicclassTree
xuan_abc
·
2020-01-04 12:00
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